Creating an input with ss=0
caused the value to be left off of the command-line after -ss
:
In : (ffmpeg.input('in', ss=0).output('out').get_args())
Out: [u'-ss', u'-i', 'in', 'out']
With this fix:
In : (ffmpeg.input('in', ss=0).output('out').get_args())
Out: [u'-ss', u'0', u'-i', 'in', 'out']